It's a little sad to see CRTs withering into nothingness. The devices just don't last. The glass is obviously fragile. But even if you keep it padded and safe, the coils of the deflection yoke are thin magnet wire operated at high voltage, and after decades of thermal cycles and the resulting rubbing eventually the barrier between two drops enough and they short, catastrophically.

And you can't really repair that in any feasible way. There are hundreds or thousands of windings, which have to duplicate exactly the configuration from the factory (and then probably be calibrated by processes that are lost to history). A dead CRT is just a useless hunk of glass, forever.

They're all dying. And that's kind of sad.